Quantum Data Energy PLC (LSE: MAST), formerly Mast Energy Developments PLC, develops, owns and operates flexible generation power assets in the United Kingdom, providing dynamic electricity generation to support the national grid and AI datacentres. The company offers gas-powered reserve power plants, including the operational Pyebridge project (9 MW in Derbyshire), Bordesley project (5 MW in Birmingham), Rochdale project (4.4 MW in West Midlands), Hindlip project (7.5 MW in Worcester) and Stather project (2.4 MW in Lincolnshire); modular AI power campuses delivered in 25-50 MW blocks targeting 1 GW capacity over 36 months; battery systems and green gas solutions; combined heat and power projects; and capacity market contracts with power purchase agreements. Founded in 2020 and headquartered in London, Quantum Data Energy operates exclusively in the UK, serving grid operators, AI infrastructure providers and commercial customers in the renewable energy transition and digital economy sectors. The company recently rebranded from Mast Energy Developments PLC to pursue its AI datacentre power strategy; advanced non-dilutive project-level funding with Sustainable Investing Solutions for 40 MW developments and 300 MW opportunistic acquisitions of operational flexgen assets, targeting financial close in Q1 2026; progressed its 10 MW CHP project and Hindlip groundbreaking with a 7 MW purchase; appointed Celia Li as independent non-executive director in 2025; and leverages partnerships with Powertree, C-Zero Markets and others to scale operations.